linux-kernel - [PATCH -tip v2 3/6] perf script: resolve DSOs and symbols for user-space

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Date:	Sun, 17 Jul 2011 18:30:57 +0900
From:	Akihiro Nagai <akihiro.nagai.hw@...achi.com>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	David Ahern <dsahern@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	yrl.pp-manager.tt@...achi.com,
	Akihiro Nagai <akihiro.nagai.hw@...achi.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	David Ahern <dsahern@...il.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: [PATCH -tip v2 3/6] perf script: resolve DSOs and symbols for
 user-space

Resolve user-space DSOs and symbols.
Latest perf-script can resolve DSOs and symbols for only kernel
and kernel modules. This patch resolves them for other
executable binaries.

# perf script -f ip,addr,sym,dso
3f03e016b0 ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e016b0 ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04b80       3f03e016b3 _start (/lib64/ld-2.14.so)
3f03e04b80 ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04ba6 ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04bad ffffffff814675d2 irq_return ([kernel.kallsyms])
3f03e04c1d       3f03e04bfb _dl_start (/lib64/ld-2.14.so)
3f03e04c00       3f03e04c21 _dl_start (/lib64/ld-2.14.so)
3f03e04c00       3f03e04c21 _dl_start (/lib64/ld-2.14.so)
[snip]

Signed-off-by: Akihiro Nagai <akihiro.nagai.hw@...achi.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Arnaldo Carvalho de Melo <acme@...radead.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
---

 tools/perf/builtin-script.c |    4 ++++
 tools/perf/util/event.c     |    5 +++++
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index b3e0951..2356198 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -328,6 +328,10 @@ static void print_sample_addr(union perf_event *event,
 
 	thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
 			      event->ip.pid, sample->addr, &al);
+	/* try to resolve for user space */
+	if (!al.map)
+		thread__find_addr_map(thread, session, PERF_RECORD_MISC_USER,
+			MAP__FUNCTION, event->ip.pid, sample->addr, &al);
 	if (!al.map)
 		thread__find_addr_map(thread, session, cpumode, MAP__VARIABLE,
 				      event->ip.pid, sample->addr, &al);
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 3c1b8a6..49a9315 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -771,6 +771,11 @@ int perf_event__preprocess_sample(const union perf_event *event,
 
 	thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
 			      event->ip.pid, event->ip.ip, al);
+	/* try to resolve for user space */
+	if (!al->map)
+		thread__find_addr_map(thread, session, PERF_RECORD_MISC_USER,
+				MAP__FUNCTION, event->ip.pid, event->ip.ip, al);
+
 	dump_printf(" ...... dso: %s\n",
 		    al->map ? al->map->dso->long_name :
 			al->level == 'H' ? "[hypervisor]" : "<not found>");

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